Pbocess of -making and mounting commutators



F. P. HUYCK. PROCESS OF MAKING AND MOUNTING OOMMUTATORS.

I APPLICATION FILED DEG. 4 1909. 1,045, 147 Patnted Nov. 26, 1912.

2 SHEETS-SHEET 1,

- INVENTOR.

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WITNESSES: 9 c 5% P. P. HUYGK.

PROCESS OF MAKING AND MOUNTING GOMMUTATORS.

APPLIUATION FILED DBO. 4, 1909.

Patented N M526, 1912 2 SKEETSSHEET 2.

' WITNESSES:

FRANCIS .1. H'U'YCK, F TOLEDO, OHIO.

IRO'CESS OFIIVLAKING AND MO'ITNTING COMMUTATQRS.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Applicationfiled December 4, 1909. Serial No. 531,309

To all whom it may concern:

Be it known'that 'I, -FRANCIS P. Huron, a citizen of the United States, and a resident of Toledo, in thecounty of Lucas and State of Ohio, have invented a certain new and useful Proqess of Making .and Mounting Gommutators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to electric motor construction and has particular reference to a method of making and mounting commutators on the rotors of such motors.

The object of my invention is to'improve upon the process or processes heretofore employed in the'manufacture of commutators, whereby to minimize the cost and very materially simplify and increase the rapidity of such manufacture,

While my invention in its broader aspect is capable of being performed in numerous ways without departing from the spirit thereof, a preferred method of practising the same is fully described in the following specification, and the various steps of the same illustratedin the accompanying draw:

ings, in which,

Figure 1 is an elevation of the commutator side of the rotor of a motor with a portion of the armature broken away. Fig. 2 is a transverse section on the line 0a min F ig l. Fig. 3 is a similar section of a portion of the rotor hub or spider withthe commutator ring partially separated into sections and set on such hub or spider but not locked. Fig. 4 is a similar section of the locking ring for the commutator; Fig. 5 is a side elevation of the commutator ring partly sawed into sections, and the spaces thus formed partly' filled with insulation. Fig. 6 is an outer side view of a portion of the commutator ring and part on which is mounted With the commutator blocks insulatingly spaced and the attached flange partly sawed into corresponding sections. Fig. 7 is a section of-a portion of the commutator and its mounting, with aisaw shown in dotted lines in the act of sawing the commutator flangeinto sections. Fig. 8 is a side view of a comnutator ring clamped preparatory to hav-- mg its inner surface machined to true the same and to remove the insulation flush with such surface, and Fig. 9 is a cross sect-ion of Fig. 8.

In the carrying out of my improved process for the manufacture and mounting of commutators on the rotors of electric motors, I first provide a ring or blank A of metal or other suitable conductive material, which has preferably,been cast, machined, or otherwise suitably acted on to form a raside edge thereof, andwith an inner peripheral dove-tail rib b for the purpose hereinafter described. The next step consists in radially sawing or otherwise suitably acting on the body of theblank so as to provide a multiplicity of equidistantly spaced blocks, bars or segments 0, which'are connected and .held in ring form by the flange a, which is allowed to remain intact, or substantially so, as indicated in Fig. 5. The spaces between blocks 0 are then filled with mica, or other suitable insulating material d, and the whole is then preferably shellacked,,,or otherwise suitably treated with an insulating coat, and baked. Subsequent to the shellacking but previous to the baking, however, a

clamping member B of any suitable form is clamped closely around the body of the blank to form a closely united or unitary mass of the blocks or bars 0 and insulation dially-projecting peripheral flange a at one spacings d, shown in Fig. 8. 'After the baking act-ion the blank A, while still held by the clamping member B, is subjected to a machining operation to true the inner peripheral surface of same and to clean or trim all projecting insulating material therefrom *flush With the surface of the blank.

This having been done, the blank A, with the clamp still mounted thereon, is slipped over an end of the rim portion of a rotor hub or spider C with the inner side of the dove-tail rib b in abutment with a complemental rib e on such hub or spider. Previous to this, however, a strip of insulating cloth or material 'f is placed over the end of the hub or spider to insulate the commutator bars therefrom, see Fig. 4:. The blank A having been placed on the rotor hub, a locking-ring g is slipped over the end of the hub against the outer side of the rib b, with the insulation f disposed between it and the ring A, and the edge of the hub is then expanded-to secure the locking ring 9 against removal, or

blah aieoininntathr bars totherotor hub by the pro J vision of the dove-tail?) on the blank and the complement-a1 engaging partson the hub is pfeferable method of doing the same, the 1 may besecured to the shaft in any other suitable or convenient manner without departing from the scope of my invention.

- to the rotor hill), the clamping member B is.

The commutator bars having been secured removedtherefroln and the flange a then radially sawed in register with and to the innor ends of the spaces previously formed between the blocks or bars a, as indicated in Fig. 7 and a portionof Fig. 6, thus providing an individualflange part for-each block or bar. The saw employed for this purpose is preferably thicker than the saw used in fseparating the'blank into the blocks or bars 0, so that the air spaces between the blockflanges are of greater width thant-he insulatime d between the blocks. This being done The advantage of my invention will be readilyapparent to those skilled in the" art as it'is evident from the above that the commutator blank A remains an integrally connected unit until it has been mountedon and firmly secured to the rotor hub, after which it is separated into the individual insulated blocks or bars-c, thus avoiding the handling 'of a multiplicity of blocks or bars in the building up of a commutator and the individually securing of each of such blocks to the rotor hub or other mounting, as has heretofore been the case in commutator construction. a

While I have shown the-commutatof the process of'manufacture of which forms the eatureof my present invention, as being associated with a certain type and construe-i ,tion ofrotor, I wish it understood that the employment of my improved process is not thereby limited-to use in such connection,

as it may be used in connection with any type or construction of rotorfor which itmay be adapted or appropriate. I also wish it understood that my invention is not limited to the specific acts or steps described and illustrated, except in so far as such limitations are specified intli'e claims, as'the primary or essential feature of my invention consists in severing an annular portion of a blank into segments, filling the spaces betweensuch segments with insulation, mounting the blank on a motor part and firmly securing the segment parts thereto, and finally severingthe remaining annular portion of the blank to entirely insulatethe segments from each other. While the 'rem'aining steps described are preferable, such steps may be varied,"or changed or omitted as may be desired without avoiding the scope of my invention! Having thus described my invention, what I claim as newand desire to secure by Letters Patent, is, K

1. The process of manufacturing commutators, consisting inproviding a ring having a peripheral flange, separating the body of the ring into a plurality of spaced bars which are connected by said flange, filling the spaces between the bars with insulation,

mounting and securing the ring on a mount,- and then acting on the fiangeto sever'the connections between the blocks to form individual upstanding terminal ears for each bar,

2. The process of manufacturing coman annular portion ofa blank to provide a plurality of spaced segments connected by the remaining annular portion of the blank, inserting insulation between the segments, mounting and securing the blank in this form upon a mount, and then sawing the re maining integral portion of the blank to en tirely insulate the first mentioned segments from each other, and to form an individual terminal attaching part for each segment.

In testimony whereof, I have hereunto signed my name to this specification in the presence of two subscribing witnesses. FRANCIS P. HUYCK.

WVitnesses:

STELLA E. THoMAs,

G. W. Owen;

Copies of this patent may be obtained for five cents eaclnby addressing the Commissioner of Patents Washington, D. G."

-mutators, which consists in radially sawing 

